Since 2002 Soil Solutions, LLC and our clients have applied over 1,000,000 tons of PRO CAL 40 and NutraBio. Some of our customers will leave untreated areas to compare with the treated area. In addition, we have large replicated plots with known rates to compare with untreated. We have attempted to test PRO CAL 40 and NutraBio under different soil environments, tillage practices, etc.
Browse our Crop Responses to see the results!

Sioux City, Iowa

The producer in the picture is helping to visually represent the effect that PRO CAL 40 had on his soybean crop. He applied 1 ton/Acre of PRO CAL 40 to the land on the right side of this picture. The treated area yielded 5 to 15 bushels better than the untreated area according to the yield monitor. This Missouri River Valley soil is a silt loam soil with a pH of 8.1.